HTML頁面加載導致Javascript在重定向頁面中無法正常運行
[英]Html page loading causing Javascript to not function properly in redirected page
問題描述
我的主頁按鈕未在get請求中添加標題，因此出現了這個問題。 我將令牌存儲在localStorage內部，並在向Controller：Home Action：Index發出get請求時將其發送到標頭中。 從我所看到的，它不使用我的jQuery，直接進入帳戶/索引。
最初，盡管我沒有將JavaScript綁定到按鈕單擊上，但還是有問題。 經過進一步調查，我發現_Layout.cshtml中的Console.log()不起作用，該按鈕也不起作用。 這使我相信$("html").html(response);存在問題$("html").html(response); 在Login.js文件中。
正確的流程是LoginPage-> Login.js（獲取數據並使用Ajax進行發布請求。）->返回由_Layout.cshtml和/Views/Home/Index.cshtml組成的html頁面
以下是文件“ Views / Shared / _Layout.cshtml”的代碼：
<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <title>@ViewData["Title"] - Chat </title> <environment include="Development"> <link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.css" /> <link rel="stylesheet" href="~/css/site.css" /> </environment> <environment exclude="Development"> <link rel="stylesheet" href="https://ajax.aspnetcdn.com/ajax/bootstrap/3.3.7/css/bootstrap.min.css" asp-fallback-href="~/lib/bootstrap/dist/css/bootstrap.min.css" asp-fallback-test-class="sr-only" asp-fallback-test-property="position" asp-fallback-test-value="absolute" /> <link rel="stylesheet" href="~/css/site.min.css" asp-append-version="true" /> </environment> </head> <body> <nav class="navbar navbar-inverse navbar-fixed-top"> <div class="container"> <div class="navbar-header"> <button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse"> <span class="sr-only">Toggle navigation</span> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> </div> <div class="navbar-collapse collapse"> <ul class="nav navbar-nav"> <li id="li_btnHome"><a asp-area="" asp-controller="" asp-action="">Home</a></li> </ul> </div> </div> </nav> <div class="container body-content"> @RenderBody() <hr /> <footer> <p>© 2018 - Chat</p> </footer> </div> <environment include="Development"> <script src="~/lib/jquery/dist/jquery.js"></script> <script src="~/lib/bootstrap/dist/js/bootstrap.js"></script> <script src="~/js/site.js" asp-append-version="true"></script> <script type="text/javascript"> console.log("Development"); </script> </environment> <environment exclude="Development"> <script src="https://ajax.aspnetcdn.com/ajax/jquery/jquery-3.3.1.min.js" asp-fallback-src="~/lib/jquery/dist/jquery.min.js" asp-fallback-test="window.jQuery" crossorigin="anonymous" integrity="sha384-tsQFqpEReu7ZLhBV2VZlAu7zcOV+rXbYlF2cqB8txI/8aZajjp4Bqd+V6D5IgvKT"> </script> <script src="https://ajax.aspnetcdn.com/ajax/bootstrap/3.3.7/bootstrap.min.js" asp-fallback-src="~/lib/bootstrap/dist/js/bootstrap.min.js" asp-fallback-test="window.jQuery && window.jQuery.fn && window.jQuery.fn.modal" crossorigin="anonymous" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa"> </script> <script src="~/js/site.min.js" asp-append-version="true"></script> <script type="text/javascript"> console.log("Not Development"); </script> </environment> <script type="text/javascript"> console.log("Hello World"); </script> <!--<script src="~/js/NavBarFunction.js"></script>--> @RenderSection("Scripts", required: false) </body> </html>
這是JavaScript文件“ wwwroot / js / NavBarFunctions.js”：
$("#li_btnHome a")[0].onclick = function (event) { event.preventDefault(); alert("called click"); var tokenObj = localStorage.getItem("token"); var tokenStr = tokenObj == null ? "what_about_tokenObj_is_null?" : tokenObj.toString(); $.ajax({ type: 'GET', contentType: 'application/json; charset=utf-8;', url: '@Url.Action("Index", "Home")', beforeSend: function (xhr) { xhr.setRequestHeader("Authorization", tokenStr); }, success: function (response) { alert(1); $("html").html(response); } }); return false; };
這是HomeController，位於“控制器/ HomeController”中：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Chat.Enums;
using Chat.Identity;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Primitives;
namespace _Chat.Controllers
{
public class HomeController : Controller
{
private AuthenticateUser authenticateUser = new AuthenticateUser();
public async Task<IActionResult> Index()
{
var request = Request;
var headers = request.Headers;
StringValues token;
if (headers.TryGetValue("Authorization", out token))
{
var result = await this.authenticateUser.ValidateToken(token);
if (result.Result == AuthenticateResult.Success)
{
return View();
}
else
{
return RedirectToAction("Index", "Account");
}
}
return RedirectToAction("Index", "Account");
}
}
}
出於某種奇怪的原因，我的頁面從登錄重定向到首頁后，所有腳本/ javascript都停止了工作。
這是驗證登錄的代碼。 位於“ Controllers / AccountController”中：
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IdentityModel.Tokens.Jwt;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Chat.Models;
using Chat.DatabaseAccessObject;
using Chat.Identity;
using Chat.DatabaseAccessObject.CommandObjects;
using System.Linq.Expressions;
using System.Net.Mime;
using System.Security.Claims;
using System.Text;
using Microsoft.AspNetCore.Authentication;
using Microsoft.IdentityModel.Tokens;
namespace Chat.Controllers
{
public class AccountController : Controller
{
private const string SECRET_KEY = "CHATSECRETKEY";
public static SymmetricSecurityKey SIGNING_KEY = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(SECRET_KEY));
private ServerToStorageFacade serverToStorageFacade = new ServerToStorageFacade();
private AuthenticateUser authenticateUser = new AuthenticateUser();
public IActionResult Index()
{
return View();
}
// Post: /login/
[HttpPost]
public async Task<IActionResult> Login([FromBody]LoginModel loginModel)
{
if (ModelState.IsValid)
{
var mapLoginModelToUser = new MapLoginModelToUser();
var user = await mapLoginModelToUser.MapObject(loginModel);
// If login user with those credentials does not exist
if(user == null)
{
return BadRequest();
}
else
{
var result = await this.authenticateUser.Authenticate(user);
if(result.Result == Chat.Enums.AuthenticateResult.Success)
{
// SUCCESSFUL LOGIN
// Creating and storing cookies
var token = Json(new
{
data = this.GenerateToken(user.Email, user.PantherID),
redirectUrl = Url.Action("Index","Home"),
success = true
});
return Ok(token);
}
else
{
// Unsuccessful login
return Unauthorized();
}
}
}
return BadRequest();
}
private string GenerateToken(string email, string pantherId)
{
var claimsData = new[] { new Claim(ClaimTypes.Email, email), new Claim(ClaimTypes.Actor, pantherId) };
var signInCredentials = new SigningCredentials(SIGNING_KEY, SecurityAlgorithms.HmacSha256);
var token = new JwtSecurityToken(
issuer: "localhost",
audience: "localhost",
expires: DateTime.Now.AddDays(7),
claims: claimsData,
signingCredentials: signInCredentials
);
return new JwtSecurityTokenHandler().WriteToken(token);
}
[ResponseCache(Duration = 0, Location = ResponseCacheLocation.None, NoStore = true)]
public async Task<IActionResult> Error() => View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
}
public class MapLoginModelToUser
{
private ServerToStorageFacade serverToStorageFacade;
public MapLoginModelToUser()
{
serverToStorageFacade = new ServerToStorageFacade();
}
public async Task<User> MapObject(LoginModel loginModel)
{
Expression<Func<User, bool>> expression = x => x.Email == loginModel.inputEmail;
var user = await this.serverToStorageFacade.ReadObjectByExpression(new User(Guid.NewGuid()), expression);
if(user == default(Command))
{
return null;
}
return new User(user.ID)
{
Email = loginModel.inputEmail,
Password = loginModel.inputPassword,
FirstName = user.FirstName,
LastName = user.LastName,
PantherID = user.PantherID,
ClassDictionary = user.ClassDictionary,
UserEntitlement = user.UserEntitlement
};
}
}
}
也是呈現頁面的代碼。 位於“ wwwroot / js / Login.js”中：
$(document).ready(function () {
$("#formSubmit").submit(function (event) {
event.preventDefault();
var email = $("#inputEmail").val();
var password = $("#inputPassword").val();
var remember = $("#rememberMe").val();
var loginModel = {
inputEmail: email,
inputPassword: password,
rememberMe: remember
};
$.ajax({
type: 'POST',
url: 'Account/Login',
data: JSON.stringify(loginModel),
contentType: 'application/json; charset=utf-8;',
success: function (response) {
var token = response.value.data;
localStorage.setItem("token", token);
alert("You have successfully logged in.");
setHeader();
redirect(response.value.redirectUrl);
}
});
});
function setHeader() {
$.ajaxSetup({
beforeSend: function (xhr) {
xhr.setRequestHeader('Authorization', localStorage.getItem("token"));
}
});
}
function redirect(redirectUrl) {
$.ajax({
type: 'GET',
contentType: 'application/json; charset=utf-8;',
url: redirectUrl,
success: function (response) {
$("html").html(response);
}
});
}
});
這是加載新的html頁面后收到的錯誤：
編輯：這是單擊主頁按鈕后響應中發送的內容。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Login - Chat FIU</title>
<link rel="stylesheet" href="/lib/bootstrap/dist/css/bootstrap.css" />
<link rel="stylesheet" href="/css/site.css" />
</head>
<body>
<nav class="navbar navbar-inverse navbar-fixed-top">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-collapse">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
</div>
<div class="navbar-collapse collapse">
<ul class="nav navbar-nav">
<li><a id="btnHome" href="/">Home</a></li>
</ul>
</div>
</div>
</nav>
<div class="container body-content">
<!doctype html>
<html lang="en">
<head>
<!-- Required meta tags -->
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- Bootstrap CSS -->
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css" integrity="sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO" crossorigin="anonymous">
<link href="/css/signin.css" rel="stylesheet">
<script src="/lib/jquery/dist/jquery.js"></script>
<script src="/lib/bootstrap/dist/js/bootstrap.js"></script>
<script src="/js/Login.js"></script>
</head>
<body class="text-center">
<form id="formSubmit" method="post" class="form-signin">
<img class="mb-4" src="/images/FIU-Chat-Curved.png" alt="" width="150" height="150">
<h1 class="h3 mb-3 font-weight-normal">Please sign in</h1>
<label for="inputEmail" class="sr-only">Email address</label>
<input autofocus="" class="form-control" data-val="true" data-val-required="The Email field is required." id="inputEmail" name="inputEmail" placeholder="Email address" required="required" type="email" value="" />
<label for="inputPassword" class="sr-only">Password</label>
<input class="form-control" data-val="true" data-val-required="The Password field is required." id="inputPassword" name="inputPassword" placeholder="Password" required="required" type="password" />
<div class="checkbox mb-3">
<label>
<input data-val="true" data-val-required="The Remember field is required." id="rememberMe" name="rememberMe" type="checkbox" value="true" /> Remember me
</label>
</div>
<button id="btnLogin" class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>
<p class="mt-5 mb-3 text-muted">© 2017-2018</p>
<input name="__RequestVerificationToken" type="hidden" value="CfDJ8Ah5tOyN_3lPrH0DgSEU8vD7Q7JItdizW-mYDc5uamCO3oRTBN-pdo9ZyPgRaHRyovwEGfT5Qhw0UD-rfbIHUJPt4FgUOhM1OkAWC9AtAfPEKkxz7TBfwKfz0EpfxF4DX2DAczujogr__xnIr3vDq3o" /><input name="rememberMe" type="hidden" value="false" /></form>
</body>
</html>
<hr />
<footer>
<p>© 2018 - Chat FIU</p>
</footer>
</div>
<script src="/lib/jquery/dist/jquery.js"></script>
<script src="/lib/bootstrap/dist/js/bootstrap.js"></script>
<script src="/js/site.js?v=BxFAw9RUJ1E4NycpKEjCNDeoSvr4RPHixdBq5wDnkeY"></script>
<script type="text/javascript">
</script>
<script type="text/javascript">
</script>
<script src="/js/NavBarFunction.js"></script>
</body>
1 個解決方案
解決方案1
0 2018-10-09 01:02:27
解決問題的關鍵在於您的流程中，如下所述：
正確的流程是LoginPage-> Login.js（獲取數據並使用Ajax進行發布請求。）->返回由_Layout.cshtml和/Views/Home/Index.cshtml組成的html頁面
這種流程意味着您要重定向到索引頁（通過使用return RedirectToAction("Index", "Account");在控制器操作中使用證明），使用GET方法重定向的AJAX用法毫無意義（因為AJAX調用打算留在同一頁面上 ）。
而不是使用$("html").html(response);替換整個HTML頁面內容$("html").html(response); ，請使用window.location.href使用指定的URL進行重定向，如下所示：
NavBarFunctions.js
$("#li_btnHome a")[0].click(function (event) {
event.preventDefault();
alert("called click");
var tokenObj = localStorage.getItem("token");
var tokenStr = tokenObj == null ? "what_about_tokenObj_is_null?" : tokenObj.toString();
$.ajax({
type: 'GET',
url: '@Url.Action("Index", "Home")',
beforeSend: function (xhr) {
xhr.setRequestHeader("Authorization", tokenStr);
},
success: function (response) {
// this is just an example, replace action & controller name as you wish
window.location.href = '@Url.Action("ActionName", "ControllerName")';
}
});
});
Login.js
function redirect(redirectUrl) {
$.ajax({
type: 'GET',
contentType: 'application/json; charset=utf-8;',
url: redirectUrl,
success: function (response) {
window.location.href = redirectUrl;
}
});
}
但是，如果要使用部分視圖呈現頁面的特定部分，則可以使用jQuery.html()作為占位符，例如<div>標簽：
<!-- partial view placeholder -->
<div id="content">...</div>
// ajax callback
$.ajax({
// other settings
.....
success: function (response) {
$('#content').html(response);
},
.....
});
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